<template>
  <view>
    <view class="goods-list-box">
      <view v-for="(item,index) in goodsList" :key="index" @click="gotoDetail(item)">
        <my-goods :goods="item"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        //请求的参数对象
        queryObj: {
          query: '',
          cid: '',
          pagenum: 1,
          pagesize: 20
        },
        //商品列表数据
        goodsList: [],
        //总数
        total: 0,
        //节流阀
        isLoading: false
      };
    },
    onLoad(options) {
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      //调用方法 获取商品列表数据
      this.getGoodsList()
    },
    methods: {
      //获取商品列表数据
      async getGoodsList(cb) {
        //请求开始，打开节流阀
        this.isLoading = true
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
        //请求完成之后，关闭节流阀
        this.isLoading = false
        cb && cb()
        if (res.meta.status !== 200) return uni.$showMsg()
        this.goodsList = [...this.goodsList, ...res.message.goods]
        this.total = res.message.total
      },
      //点击商品列表跳转到详情页
      gotoDetail(item){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id='+ item.goods_id
        })
      }
    },
    onReachBottom() {
      if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕')
      if (this.isLoading) return
      //让页面值自增加1
      this.queryObj.pagenum++
      this.getGoodsList()
    },
    onPullDownRefresh() {
      //重置关键数据
      this.queryObj.pagenum = 1
      this.total = 0
      this.isLoading = false
      this.goodsList = []
      //重新发请求
      this.getGoodsList(() => {
        uni.stopPullDownRefresh()
      })
    }
    
  }
</script>

<style lang="scss">

</style>